(CNN) -- A former Los Angeles police officer who police say has violently threatened his former colleagues shot at least two officers early Thursday, killing one, sparking a huge manhunt in Southern California, according to authorities.
Christopher Jordan Dorner, 33, is also wanted in a double slaying Sunday in Irvine, California.
The California Highway Patrol issued an alert Thursday morning urging officers in several Southern California counties to be on the lookout for Dorner after the overnight shootings.
Two officers in Riverside were shot, one fatally, police there confirmed to CNN. CNN affiliate KTLA reported another officer was shot in Corona, California.
Irvine police identified Dorner on Wednesday as the suspect in the February 3 deaths of Keith Lawrence and Monica Quan in Irvine.
Dorner also has made violent threats against other Los Angeles police officers, the agency said Wednesday.
"I will bring unconventional and asymmetrical warfare to those in LAPD uniform whether on or off duty," Dorner allegedly wrote in a lengthy letter promising retribution against the department, where he worked from 2005 until 2008. An LAPD source provided the document to CNN.
The letter writer claimed he was terminated for reporting excessive force by a fellow officer, and said his attacks were retribution for his termination, as well as a culture of racism and violence he says continues within the department.
He called the attacks against police "a necessary evil that I do not enjoy but must partake and complete for substantial change to occur within the LAPD and reclaim my name."
Los Angeles police warned people who encounter Dorner not to approach him, saying he is likely "armed and extremely dangerous."
"Our department is implementing all measures possible to ensure the safety of our LAPD personnel, their families and the Los Angeles community, and will continue to do so until Dorner is apprehended and all threats have been abated," police said in a statement.
CNN's Mallory Simon and Deanna Hackney contributed to this report.

Again, anytime you are on the opposite end of a debate, I know I'm thinking clearly.

I lump you in with Bump.

Your last post had me interested up until you used the word reason.. I believe the word you're looking for is manipulation.

__________________
"Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father ... And then will I profess unto them, I never knew you: depart from me, ye that work iniquity."

"If the people let government decide what foods they eat and what medicines they take, their bodies will soon be in as sorry a state as are the souls of those who live under tyranny." - Thomas Jefferson

You're stretching it when you say he loves Piers Morgan. He may agree with his stance on ARs but that doesn't mean he loves him. And yes, it's safe to say he hates LaPierre. LaPierre is a lobbyist. Many lobbyists are hated.

You're stretching it when you say he loves Piers Morgan. He may agree with his stance on ARs but that doesn't mean he loves him. And yes, it's safe to say he hates LaPierre. LaPierre is a lobbyist. Many lobbyists are hated.

A. He loves Piers Morgan/Hates NRA- Gun Control
B. He wants to clear his name, as stated in his rant known as his "manifesto"

This should tell us a lot about your ability to reason.

oh the irony of your post. You want to "reason" with a psycho who is on a killing rampage? Let me guess, you are just smarter than eveyone else? His manifesto said many things, as manifestos from psychos generally do. I used Mein Kampf as "exibit A" in my argument.

Do you think we can't read? A rambling manifesto is generally a good indication that the guy who wrote it has a rather high view of himself and a rather low view of the rest of us. He's up on his soap box proclaiming all the wrongs of his little world and just so we get the point, he's out killing people.

oh the irony of your post. You want to "reason" with a psycho who is on a killing rampage? Let me guess, you are just smarter than eveyone else? His manifesto said many things, as manifestos from psychos generally do. I used Mein Kampf as "exibit A" in my argument.

Do you think we can't read? A rambling manifesto is generally a good indication that the guy who wrote it has a rather high view of himself and a rather low view of the rest of us. He's up on his soap box proclaiming all the wrongs of his little world and just so we get the point, he's out killing people.

And you want to tell me what his main point is?

You misinterpreted my entire post. Maybe I wasn't clear enough, but nothing contained in that post said I wanted to reason with the suspect. I am talking about motive when I say his reason.